Restructuring and Other Charges, net - Accrual Activity Relating to Restructuring and Other Charges (Details) - USD ($) $ in Thousands	3 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Restructuring [Roll Forward]
Beginning balance	$ 17,390
Restructuring charges, net	3,390	$ 7,860
Non-cash adjustment	(152)
Cash payments	(4,430)
Ending balance	16,198
Personnel
Restructuring [Roll Forward]
Beginning balance	444
Restructuring charges, net	3,195	4,789
Non-cash adjustment	0
Cash payments	(2,792)
Ending balance	847
Facilities
Restructuring [Roll Forward]
Beginning balance	16,946
Restructuring charges, net	195	$ 3,071
Non-cash adjustment	(152)
Cash payments	(1,638)
Ending balance	$ 15,351

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

+ References

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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